:root {
    /* Light theme variables (default) */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --background: #f9fafb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --card-bg: #ffffff;
    --border: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
}

.text-analysis-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px;
}

.text-analysis-container * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.text-analysis-container body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
    min-height: 100vh;
}

.text-analysis-container .main-content {
    display: grid;
    grid-template-columns: 160px 2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 1024px) {
    .text-analysis-container .main-content {
        grid-template-columns: 140px 1fr;
    }
    
    .text-analysis-container .stats-section {
        grid-column: 1 / span 2;
    }
}

@media (max-width: 768px) {
    .text-analysis-container .main-content {
        grid-template-columns: 1fr;
    }
}

.text-analysis-container .tools-sidebar {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 1rem;
    box-shadow: var(--shadow);
    height: fit-content;
    width: 100%;
}

.text-analysis-container .tool-section {
    margin-bottom: 1.5rem;
}

.text-analysis-container .tool-section:last-child {
    margin-bottom: 0;
}

.text-analysis-container .btn {
    display: block;
    width: 100%;
    padding: 0.6rem;
    margin-bottom: 0.5rem;
    border: none;
    border-radius: 6px;
    background-color: var(--primary);
    color: white;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.text-analysis-container .btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.text-analysis-container .btn-success {
    background-color: var(--success);
}

.text-analysis-container .btn-success:hover {
    background-color: #0da271;
}

.text-analysis-container .btn-danger {
    background-color: var(--danger);
}

.text-analysis-container .btn-danger:hover {
    background-color: #dc2626;
}

.text-analysis-container .file-input {
    display: none;
}

.text-analysis-container .file-label {
    display: block;
    width: 100%;
    padding: 0.6rem;
    border-radius: 6px;
    background-color: var(--primary);
    color: white;
    font-size: 0.85rem;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-bottom: 0.5rem;
}

.text-analysis-container .file-label:hover {
    background-color: var(--primary-dark);
}

.text-analysis-container .format-select {
    display: block;
    width: 100%;
    padding: 0.6rem;
    margin-bottom: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background-color: var(--card-bg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
}

.text-analysis-container .input-section {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 1.2rem;
    box-shadow: var(--shadow);
    position: relative;
    height: fit-content;
    width: 100%;
}

.text-analysis-container .input-section:focus-within {
    box-shadow: var(--shadow-hover);
}

.text-analysis-container #text-analysis-input {
    width: 100%;
    min-height: 420px;
    padding: 0.9rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    resize: both;
    overflow: auto;
    background-color: var(--card-bg);
    color: var(--text-primary);
}

.text-analysis-container #text-analysis-input:focus {
    outline: none;
    border-color: var(--primary);
}

.text-analysis-container .resize-handle {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 14px;
    height: 14px;
    cursor: se-resize;
    opacity: 0.5;
    transition: opacity 0.3s;
}

.text-analysis-container .resize-handle:hover {
    opacity: 1;
}

.text-analysis-container .resize-handle::after {
    content: "";
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
}

.text-analysis-container .stats-section {
    display: flex;
    flex-direction: column;
}

.text-analysis-container .stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
}

.text-analysis-container .card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 0.8rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-height: 90px;
    justify-content: center;
}

.text-analysis-container .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.text-analysis-container .card-title {
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.3rem;
    text-align: center;
}

.text-analysis-container .card-value {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.text-analysis-container .card-subtext {
    color: var(--text-secondary);
    font-size: 0.65rem;
    text-align: center;
}

.text-analysis-container .keyword-section {
    margin-top: 1.5rem;
}

.text-analysis-container .keyword-section h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.text-analysis-container .keyword-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.text-analysis-container .keyword-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 1.2rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border);
}

.text-analysis-container .keyword-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.text-analysis-container .keyword-title {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.text-analysis-container .keyword-item {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.text-analysis-container .keyword-item:last-child {
    border-bottom: none;
}

.text-analysis-container .keyword-text {
    font-weight: 500;
    color: var(--text-primary);
}

.text-analysis-container .keyword-count {
    color: var(--primary);
    font-weight: 600;
}

@media (max-width: 600px) {
    .text-analysis-container .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .text-analysis-container #text-analysis-input {
        resize: vertical;
    }
}

.text-analysis-container .loading {
    display: none;
    text-align: center;
    padding: 10px;
    color: var(--primary);
}

.text-analysis-container .loading-spinner {
    border: 3px solid #f3f4f6;
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}